Hundreds of Muslim Brotherhood supporters took to the streets in Egypt on Friday to protest an intensifying crackdown on the Islamist group, setting off renewed clashes with police a day after a protester was killed in similar clashes.

The group and its allies had called for mass rallies Friday — a day that typically sees large turnouts after morning prayer — in the face of mounting pressure from the government, which this week labeled the Muslim Brotherhood a terrorist organization, the Associated Press reports.

Heavy security was deployed throughout Cairo, and smoke was seen rising from the city campus of al-Azhar University, a prominent Islamic institution, amid ongoing clashes with student protesters that left one person dead Thursday night.

Two protesters were reportedly killed across the country Friday, according to Al Jazeera, and more than 100 Muslim Brotherhood supporters were arrested, AFP reports.